ResponseEntity
is meant to represent the entire HTTP response. You can control anything that goes into it: status code, headers, and body.
@ResponseBody
is a marker for the HTTP response body and @ResponseStatus
declares the status code of the HTTP response.
@ResponseStatus
isn’t very flexible. It marks the entire method so you have to be sure that your handler method will always behave the same way. And you still can’t set the headers. You’d need the HttpServletResponse
.
Basically, ResponseEntity
lets you do more.